Single Plate Wafer Type Check Valve is a wafer-style non-return valve designed to prevent reverse flow in industrial pipeline systems.
Technical Specifications
|
Parameter |
Specification |
|
Product Type |
Single Plate Wafer Check Valve |
|
Valve Design |
Wafer Type Non-Return Valve with Single Disc Structure |
|
Connection Type |
Wafer Flanged Connection |
|
Size Range |
DN50–DN1200 (2"–48") |
|
Pressure Rating |
PN10-PN25 / Class 150 |
|
Body Materials |
Carbon Steel / Stainless Steel / Duplex Stainless Steel / Alloy Steel |
|
Disc Materials |
Stainless Steel / Duplex Stainless Steel / Alloy Materials |
|
Seat Materials |
EPDM / NBR / PTFE / Metal Seat Options |
|
End Connection |
Suitable for ANSI, DIN, JIS, BS, and GB Flange Standards |
|
Installation Position |
Horizontal Installation; Vertical Installation Available Depending on Valve Design |
|
Operating Principle |
Automatic Operation by Fluid Pressure |
|
Applicable Media |
Water, Wastewater, Air, Gas, Oil, and Various Industrial Fluids |
|
Inspection & Testing |
Material Verification, Dimensional Inspection, Pressure Testing, Functional Testing |
Key Features
Single Disc Non-Return Mechanism
The single disc design enables automatic opening and closing according to flow conditions, preventing reverse flow and protecting pumps and connected equipment.
Low Pressure Loss Flow Path
The streamlined flow passage reduces flow resistance and pressure loss, helping improve system efficiency during continuous operation.
Reliable Sealing Performance
The optimized disc and seat sealing structure provides stable shut-off performance and helps reduce leakage risks under various operating conditions.
Typical Applications
Pump Systems
Installed on pump discharge pipelines to prevent reverse flow after shutdown and protect pumps from back pressure impact.
Water Treatment Facilities
Used in water supply, wastewater treatment, and filtration systems to maintain flow direction and prevent pipeline backflow.
Cooling Water Systems
Applied in cooling loops, HVAC circulation, and condenser water systems where stable one-way flow control is required.
Chemical Process Lines
Installed in process pipelines handling chemical or industrial fluids where material compatibility and backflow prevention are required.
Compressed Air Systems
Used on compressor discharge pipelines to prevent reverse pressure and maintain stable air system operation.
Oil and Industrial Fluid Systems
Applied in transfer pipelines, process lines, and utility systems requiring automatic backflow prevention.
Material & Configuration Options
Size & Configuration Options
Valve dimensions, pressure classes, internal components, and disc configurations can be adjusted according to project requirements and service conditions.
Body & Disc Materials
Material options include carbon steel, stainless steel, duplex stainless steel, and alloy steel for different service environments.
Connection Standards
Compatible with ANSI, DIN, BS, JIS, and GB flange standards for different pipeline installation requirements.
Seat & Sealing Materials
Seat materials can be selected based on operating temperature, fluid characteristics, and sealing performance requirements.
Manufacturing Capability
Highly Experienced
Established in 1997, PORO provides industrial valve manufacturing experience for global pipeline projects with standard and customized valve solutions.
Integrated Manufacturing Process
Production covers material verification, precision machining, assembly, inspection, and final preparation processes to ensure manufacturing consistency throughout valve production.
Multi-Material Manufacturing Capability
Manufacturing capabilities include carbon steel, low temperature carbon steel, stainless steel, duplex stainless steel, and alloy steel valve solutions.
Engineering Support
PORO provides technical support for valve selection, material recommendation, and project-specific requirements.
Complete Industrial Valve Range
PORO manufactures a wide range of industrial valves, including gate valves, globe valves, check valves, ball valves, butterfly valves, slab gate valves, and forged valves.
Quality Control & Inspection
|
Inspection Stage |
Control Item |
|
Material Inspection |
Material verification before production |
|
Machining Inspection |
Dimensional accuracy and component quality |
|
Assembly Inspection |
Component fitting and valve operation |
|
Pressure Testing |
Hydrostatic and sealing performance testing |
|
Final Inspection |
Overall appearance and functional verification |
Packaging and Transportation
Valve Protection
Valve surfaces, openings, and sealing areas are protected to reduce contamination, corrosion, and damage risks during storage and transportation.
Export Packaging
Valves are packed in export wooden cases or pallets according to valve size, shipment method, and customer requirements.
FAQ
Q: What is the difference between a single plate wafer check valve and a dual plate check valve?
A: A single plate wafer check valve uses one disc for flow control, while a dual plate check valve uses two spring-loaded plates with different flow characteristics and installation requirements.
Q: How does a wafer check valve prevent reverse flow?
A: The disc opens under forward flow pressure and closes automatically when flow decreases or reverses, preventing backflow through the pipeline.
Q: What is the installation direction of a wafer check valve?
A: The valve should be installed according to the marked flow direction. Installation position depends on valve design and pipeline conditions.
Q: What factors affect wafer check valve performance?
A: Performance depends on flow velocity, pressure conditions, installation position, valve size, and proper selection for the application.
Q: What is the difference between wafer check valve and flanged check valve?
A: A wafer check valve is installed between pipeline flanges with a compact design, while a flanged check valve uses direct flange connections and generally requires more installation space.
Q: How do I select the correct wafer check valve size?
A: Selection should consider pipeline size, flow rate, operating pressure, medium characteristics, and installation conditions.
Q: What causes pressure loss in a check valve?
A: Pressure loss is affected by valve design, internal flow passage, disc movement, and actual operating conditions.
Q: Can wafer check valves be used for vertical pipelines?
A: Some wafer check valves support vertical installation, but suitability depends on valve design, flow direction, and operating conditions.
Q: How can leakage from a wafer check valve be reduced?
A: Proper installation, suitable sealing materials, and correct valve selection help maintain reliable sealing performance.
Q: What standards are commonly used for wafer check valves?
A: Wafer check valves are commonly designed according to standards such as API 594, EN 12334, MSS SP-125, and related flange requirements.
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